Motivated by definitions of countable completely regular spaces and completely below relations of frames, we define what we call a $c$-completely below relation, denoted by $\prec\!\!\prec_c$, in between two elements of a frame. We show that $a\prec\!\!\prec_c b$ for two elements $a, b$ of a frame $L$ if and only if there is $\alpha\in\mathcal{R}L$ such that $\coz\alpha\wedge a=0$ and $\coz(\alpha-{\bf1})\leq b$ where the set $\{r\in\mathbb{R} : \coz(\alpha-{\bf r})\ne 1\}$ is countable. We say a frame $L$ is a $c$-completely regular frame if $a=\bigvee \limits_{x\prec\!\!\prec_ca}x$ for any $a\in L$. It is shown that a frame $L$ is a $c$-completely regular frame if and only if it is a zero-dimensional frame. An ideal $I$ of a frame $L$ is said to be $c$-completely regular if $a\in I$ implies $a\prec\!\!\prec_c b$ for some $b\in I$. The set of all $c$-completely regular ideals of a frame $L$, denoted by ${\mathrm{c-CRegId}}(L)$, is a compact regular frame and it is a compactification for $L$ whenever $it$ is a $c$-completely regular frame. We denote this compactification by $\beta_cL$ and it is isomorphic to the frame $\beta_0L$, that is, Stone-Banaschewski compactification of $L$. Finally, we show that open and closed quotients of a $c$-completely regular frame are $c$-completely regular.
Abedi,M. and Estaji,A. A. (2023). On c-completely regular frames. Journal of Frame and Matrix Theory, 1(1), 23-33. doi: 10.22034/jfmt.2023.416420.1003
MLA
Abedi,M. , and Estaji,A. A. . "On c-completely regular frames", Journal of Frame and Matrix Theory, 1, 1, 2023, 23-33. doi: 10.22034/jfmt.2023.416420.1003
HARVARD
Abedi M., Estaji A. A. (2023). 'On c-completely regular frames', Journal of Frame and Matrix Theory, 1(1), pp. 23-33. doi: 10.22034/jfmt.2023.416420.1003
CHICAGO
M. Abedi and A. A. Estaji, "On c-completely regular frames," Journal of Frame and Matrix Theory, 1 1 (2023): 23-33, doi: 10.22034/jfmt.2023.416420.1003
VANCOUVER
Abedi M., Estaji A. A. On c-completely regular frames. JFMT, 2023; 1(1): 23-33. doi: 10.22034/jfmt.2023.416420.1003